@book{Jarre1989,
  author    = {Jarre, Jan},
  title     = {Landwirtschaftlicher Strukturwandel in den 90er Jahren},
  volume    = {89,5},
  edition   = {1. Aufl.},
  publisher = {Evang. Akad. Loccum, Protokollstelle},
  address   = {Rehburg-Loccum},
  isbn      = {3-8172-0589-9},
  pages     = {184 S. : graph. Darst.},
  year      = {1989},
  language  = {de}
}
@book{WahrburgAssmann1989,
  author    = {Wahrburg, Ursel and Assmann, Gerd},
  title     = {Arteriosklerose},
  volume    = {1020},
  edition   = {1. Aufl.},
  publisher = {Falken},
  address   = {Niedernhausen/Ts.},
  isbn      = {3-8068-1020-6},
  pages     = {192 S. : Ill., graph. Darst.},
  year      = {1989},
  language  = {de}
}
@article{vonMuehlendahlGardemann1989,
  author    = {von M{\"u}hlendahl, Karl Ernst and Gardemann, Joachim},
  title     = {Schwere Lostver{\"a}tzung bei einem Jungen durch Kampfgasrestbest{\"a}nde aus dem 2. Weltkrieg},
  series = {P{\"a}diatrische Praxis},
  volume    = {39},
  journal   = {P{\"a}diatrische Praxis},
  pages     = {271 -- 279},
  year      = {1989},
  language  = {de}
}